Actress has steamy romp with Ewan McGregor

Michelle Williams stripped off for her latest film role.

The actress goes topless for a sex scene with co-star Ewan McGregor, 37, in Incendiary.

She plays a cheating woman whose husband and son are killed in a suicide bomb attack.

Michelle, 28, is mum to Matilda, 3, with the late Heath Ledger.

Incendiary is out now on DVD.

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SEE VIDEO Michelle Williams in Incendiary…

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